How should environmental monitoring excursions be handled in GLP studies?

• A. Address excursions with records and corrective action.
• B. Ignore excursions until the next audit.
• C. Archive without action.
• D. Only notify the sponsor.

Answer: (A)

Handling environmental monitoring excursions properly is essential for GLP data integrity. When a deviation from required environmental conditions occurs, it must be documented promptly and followed by corrective action that investigates the cause, assesses any impact on study data, and implements steps to prevent recurrence. This creates a clear record for audit purposes and demonstrates that the issue was addressed responsibly, which is a key expectation in GLP systems. Corrective actions might include fixing or recalibrating equipment, adjusting procedures, retraining staff, or modifying monitoring programs, as well as reviewing affected data and, if necessary, re-testing or re-running experiments. Simply ignoring the excursion delays remediation and risks compromising data validity; archiving without action fails to address potential impact; and only notifying the sponsor omits the organization’s responsibility to investigate and fix the root cause.